| Description of elements in the header | |
|---|---|
| m_ss | amount of monthly sunshine duration |
| m_sx | the maximum sunshine duration in the month |
| m_sxd | the day with the maximum sunshine duration |
| m_dsf20 | number of days when the sunshine duration is less than 20 % of the astronomic sunshine duration |
| m_dsf80 | number of days when the sunshine duration is more than 80 % of the astronomic sunshine duration |
| 2009. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 39.8 | 6.5 | 2009-01-08 | 22 | 0 |
| February | 81.1 | 9.7 | 2009-02-20 | 15 | 2 |
| March | 143.3 | 10.5 | 2009-03-21 | 9 | 5 |
| April | 267.9 | 12.8 | 2009-04-27 | 1 | 12 |
| May | 291.2 | 14.8 | 2009-05-26 | 1 | 9 |
| June | 255.7 | 15.0 | 2009-06-19 | 4 | 7 |
| July | 365.4 | 14.5 | 2009-07-14 | 0 | 17 |
| August | 312.4 | 14.0 | 2009-08-02 | 3 | 17 |
| September | 239.6 | 11.9 | 2009-09-07 | 3 | 7 |
| October | 116.8 | 10.1 | 2009-10-05 | 13 | 4 |
| November | 88.2 | 8.4 | 2009-11-02 | 14 | 3 |
| December | 40.1 | 7.7 | 2009-12-29 | 21 | 1 |